We're not doing maths again?' Harriet lamented.
Lord Winstead looked at Anne with unconcealed curiosity. 'Mathematics? On Rotten Row?'
'We have been studying measurement,' she informed him. 'They have already measured the average length of their strides. Now they will count their steps and compute the length of the path.'
'Very nice,' he said approvingly. 'And it keeps them busy and quiet as they count.'
'You have not heard them count,' Anne told him.

Autor: Julia Quinn